NCS1002 Constant Voltage / Constant Current SecondarySide Controller Description The NCS1002 is a highly integrated solution for Switching Mode Power Supply (SMPS) applications requiring a dual control loop to perform Constant Voltage (CV) and Constant Current (CC) regulation. The NCS1002 integrates a 2.5 V voltage reference and two precision op amps. The voltage reference, along with Op Amp 1, is the core of the voltage control-loop. Op Amp 2 is an independent, uncommitted amplifier specifically designed for the current control. Key external components needed to complete the two control loops are: (a) A resistor divider that senses the output of the power supply (battery charger) and fixes the voltage regulation set point at the specified value. (b) A sense resistor that feeds the current sensing circuit with a voltage proportional to the DC output current. This resistor determines the current regulation set point and must be adequately rated in terms of power dissipation. The NCS1002 comes in a small 8−pin SOIC package and is ideal for space-shrunk applications such as battery chargers. MARKING DIAGRAMS 8 SOIC−8 D SUFFIX CASE 751 8 1 1 A L Y W G 1002 ALYWG G = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package (Note: Microdot may be in either location) PIN CONNECTIONS Features • • • • • • • http://onsemi.com Low Input Offset Voltage: 0.5 mV, Typ Input Common-Mode Range includes Ground Low Quiescent Current: 300 mA per Op Amp at VCC = 5 V Large Output Voltage Swing Wide Power Supply Range: 3 V to 32 V High ESD Protection: 2 kV These are Pb−Free Devices Out 1 1 8 VCC In 1− 2 7 Out 2 In 1+ 3 6 In 2− GND 4 5 In 2+ (Top View) Typical Applications • Battery Chargers • Switch Mode Power Supplies ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 8 of this data sheet. © Semiconductor Components Industries, LLC, 2009 July, 2009 − Rev. 1 1 Publication Order Number: NCS1002/D NCS1002 MAXIMUM RATINGS Symbol Rating Unit Supply Voltage (VCC to GND) Parameter VCC 36 V Differential Input Voltage Vid 36 V Input Voltage Vi −0.3 to +36 V VESD 2000 V TJ 150 °C ESD Protection Voltage at Pin Human Body Model Maximum Junction Temperature Specification Temperature Range (Tmin to Tmax) TA −40 to +105 °C Operating Free−Air Temperature Range Toper −55 to +125 °C Storage Temperature Range Tstg −55 to +150 °C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. THERMAL CHARACTERISTICS Parameter Thermal Resistance Junction−to−Ambient http://onsemi.com 2 Symbol Rating Unit RqJA 175 °C/W NCS1002 ELECTRICAL CHARACTERISTICS Symbol Characteristics Conditions Typ Max Unit 0.3 0.4 mA 0.75 mA TA = 25°C 2.0 mV −40 v TA v +105°C 3.0 mV ICC Total Supply Current, excluding current in the Voltage Reference VCC = 5 V, no load; −40 v TA v +105°C ICC Total Supply Current, excluding Current in the Voltage Reference VCC = 30 V, no load; −40 v TA v +105°C Min OP AMP 1 (OP AMP WITH NONINVERTING INPUT CONNECTED TO THE INTERNAL Vref) (VCC = 5 V, TA = 25°C unless otherwise noted) VIO DVIO Input Offset Voltage Input Offset Voltage Drift (−40 v TA v +105°C) 7.0 mV/°C lIB Input Bias Current (Inverting Input Only) TA = 25°C 20 nA AVD Large Signal Voltage Gain (VCC = 15 V, RL = 2 kW, VICM = 0 V) 100 V/mV PSRR ISOURCE IO ISINK VOH VOL Power Supply Rejection (VCC = 5.0 V to 30 V, VOUT = 2 V) 80 100 dB Output Source Current (VCC = 15 V, VOUT = 2.0 V, Vid = 1 V) 20 40 mA Short Circuit to GND (VCC = 15 V) 40 Output Current Sink (Vid = −1 V) mA VCC = +15 V, VOUT = 0.2 V (Note 1) 1 10 mA VCC = +15 V, VOUT = 2 V 10 20 mA RL = 2 kW, TA = 25°C 26 27 V Output Voltage Swing, High (VCC = 30 V) Output Voltage Swing, Low −40 v TA v +105°C 26 RL = 10 kW, TA = 25°C 27 −40 v TA v +105°C 27 28 5.0 RL = 10 kW, TA = 25°C −40 v TA v +105°C SR 60 50 mV 50 Slew Rate (AV = +1, Vi = 0.5 V to 2 V, VCC = 15 V, RL = 2 kW, CL = 100 pF) 0.2 0.4 V/ms GBP Gain Bandwidth Product (VCC = 30 V, AV = +1, (Note 1) RL = 2 kW, CL = 100 pF, f = 100 kHz, VIN = 10 mVPP) 0.5 0.9 MHz THD Total Harmonic Distortion (f = 1 kHz, AV = 10, RL = 2 kW, VCC = 30 V, VOUT = 2 VPP) 0.08 % OP AMP 2 (INDEPENDENT OP AMP) (VCC = 5.0 V, TA = 25°C unless otherwise noted) VIO Input Offset Voltage TA = 25°C 0.5 −40 v TA v +105°C DVIO Input Offset Current IB Input Bias Current 7.0 TA = 25°C 2.0 −40 v TA v +105°C PSRR Large Signal Voltage Gain (VCC = 15 V, RL = 2 kW, VOUT = 1.4 V to 11.4 V) 20 50 −40 v TA v +105°C 25 65 1. Guaranteed by design and/or characterization. http://onsemi.com 3 75 nA 150 nA 200 TA = 25°C Power Supply Rejection (VCC = 5 V to 30 V) mV/°C 150 TA = 25°C −40 v TA v +105°C AVD mV 3.0 Input Offset Voltage Drift (−40 v TA v +105°C) IIO 2.0 100 V/mV 100 dB NCS1002 ELECTRICAL CHARACTERISTICS (continued) Symbol Characteristics Conditions Min Typ Max Unit V OP AMP 2 (INDEPENDENT OP AMP) (continued) (VCC = 5.0 V, TA = 25°C unless otherwise noted) VICM CMRR ISOURCE IO ISINK VOH VOL Input Common Mode Voltage Range (Note 2) (VCC = +30 V) TA = 25°C 0 VCC − 1.5 −40 v TA v +105°C 0 VCC − 2.0 0 to VCC − 1.7 V, TA = 25°C 70 0 to VCC − 2.2 V −40 v TA v +105°C 60 Common Mode Rejection Ratio (Note 4) Output Current Source (VCC = 15 V, VOUT = 2 V, VID = +1 V) 20 Short−Circuit to GND (VCC = 15 V) 85 dB 40 mA 40 Output Current Sink (VID = −1 V) 1 10 mA VCC = +15 V, VOUT = 2 V 10 20 mA RL = 2 kW, TA = 25°C 26 27 V −40 v TA v +105°C 26 RL = 10 kW, TA = 25°C 27 −40 v TA v +105°C 27 28 5.0 RL = 10 kW, TA = 25°C −40 v TA v +105°C SR mA VCC = +15 V, VOUT = 0.2 V Output Voltage Swing, High (VCC = 30 V) Output Voltage Swing, Low 60 50 mV 50 Slew Rate (AV = +1, Vi = 0.5 V to 3 V, VCC = 15 V, RL = 2 kW, CL = 100 pF) 0.2 0.4 V/ms GBP Gain Bandwidth Product (VCC = 30 V, AV = +1, RL = 2 kW, CL = 100 pF, f = 100 kHz, VIN = 10 mVPP) (Note 4) 0.5 0.9 MHz THD Total Harmonic Distortion (f = 1 kHz, AV = 10, RL = 2 kW, VCC = 30 V, VOUT = 2 VPP) 0.08 % enoise Equivalent Input Noise Voltage (f = 1 kHz, RS = 100 W, VCC = 30 V) 50 nV/√Hz VOLTAGE REFERENCE IK Vref DVref Imin I ZKA I Cathode Current 1 to 100 Reference Voltage (IK = 1 mA) mA V TA = 25°C 2.49 2.5 2.51 −40 v TA v +105°C 2.48 2.5 2.52 Reference Deviation over Temperature (VKA = Vref, IK = 10 mA, −40 v TA v +105°C) (Note 4) 7.0 30 mV Minimum Cathode Current for Regulation (VKA w 2.45 Vf) 40 75 mA Dynamic Impedance (Note 3) (VKA = Vref, IK = 1 mA to 100 mA, f < 1 kHz) 0.2 0.5 W 2. The input common−mode voltage of either input signal should not be allowed to go negative by more than 0.3 V. The upper end of the common−mode range is VCC − 1.5 V. Both inputs can go to VCC + 0.3 V without damage. 3. The Dynamic Impedance is defined as l ZKA l = DVKA / DIK. 4. Guaranteed by design and/or characterization. http://onsemi.com 4 NCS1002 25 1.2 20 BIAS CURRENT (pA) INPUT OFFSET VOLTAGE (mV) 1.4 1.0 0.8 0.6 OP1 0.4 0.2 0 −50 −30 −10 10 30 50 70 90 110 15 10 5 0 −50 130 −30 −10 10 30 50 70 TEMPERATURE (°C) TEMPERATURE (°C) Figure 1. Input Offset Voltage vs. Temperature 90 110 80 100 Figure 2. IB vs. Temperature 2.6 2.52 2.58 2.56 2.51 2.52 Vref (V) Vref (V) 2.54 2.5 2.48 2.46 2.5 2.49 2.44 2.42 0 10 20 30 40 50 60 70 80 90 2.48 −40 100 −20 0 20 40 60 CATHODE CURRENT IK (mA) TEMPERATURE (°C) Figure 3. Vref as a Function of IK Figure 4. Vref Over Temperature S − Stable; U − Unstable 25 s u u u u u u u u u u u 20 s s u u u u u u u u u u 15 s s s u u u u u u u u u 14 s s s s u u u u u u u s 13 s s s s s u u u u u u s 12 s s s s s u u u u u s s 11 s s s s s s s s s s s s 10 s s s s s s s s s s s s 9 s s s s s s s s s s s s 8 s s s s s s s s s s s s 7 s s s s s s s s s s s s 6 s s s s s s s s s s s s 5 s s s s s s s s s s s s 4 s s s s s s s s s s s s 3 s s s s s s s s s s s s 2 s s s s s s s s s s s s 1 s s s s s s s s s s s s 0.5 s s s s s s s s s s s s 100 pF 500 1000 1500 2000 3 nF u u s s s s s s s s s s s s s s s s 4 u s s s s s s s s s s s s s s s s s 0.5 s s s s s s s s s s s s s s s s s s 5.8 DYNAMIC IMPEDANCE (W) IK (mA) 2.4 0.45 0.4 0.35 0.3 0.25 0.2 −40−30−20−10 0 10 20 30 40 50 60 70 80 90 100 CAPACITIVE LOAD ON Vref (Pin 3) TEMPERATURE (°C) Figure 5. Region of Reference Stability vs. Capacitive Load (Pin 3) Figure 6. Ref Dynamic Impedance vs. Temperature http://onsemi.com 5 COMMON MODE REJECTION RATIO (dB) NCS1002 120 25°C −40°C 105°C 80 60 40 20 0 0 5 10 15 20 25 SUPPLY VOLTAGE (V) 30 35 −40°C 100 105°C 80 25°C 60 40 20 0 0 Figure 7. NCS1002 PSRR vs. Supply Voltage 5 10 15 20 25 SUPPLY VOLTAGE (V) 5 2 1 0.5 0.2 0.1 0.05 0.02 0.01 0.005 0.002 0.001 20 50 100 200 30 Figure 8. NCS1002 CMRR vs. Supply Voltage 10 THD+N (%) PSRR (dB) 100 120 500 1k FREQUENCY (Hz) Figure 9. THD+N http://onsemi.com 6 2k 5k 10k 20k 35 − + V4 4 DF06S 2 3 http://onsemi.com 7 R13 220 k D6 1N4148 1 U2 90−264 VAC L2 470 μH 0.2 A + C5 4.7 μ 400 V L1 470 μH 0.2 A R12 10 k + C6 4.7 μ 400 V 8 7 6 5 NCP1200 NCP1200D60 1 2 3 4 U1 R1 3 U4 2 SFH6156−3 4 1 R7 3.3 0.6 W R10 68 k C3 330 μF + + D5 1N4148 D4 1N4148 C9 0.047 μF C10 1 nF 250 VAC Y1 C2 10 μ D2 1N5819 Figure 1. AC Adapter Application + C7 47 μF MTD1N60E Q1 D3 1N4937 C1 470p 250 V 100 k 1 W D1 MUR120 Out1 1 In1− 2 In1+ 3 Ground 4 R11 75 k 1% R4 1.5 k L3 4.7 μH 1A NCS1002 U3 VCC 8 Out2 7 In2− 6 In2+ 5 R2 3.3 k R8 2.7 k 1% R9 470 C8 0.1 μ R6 0.15 R5 10 k 1% R3 10 k 1% + C4 47 μ 5.2 V, 600 mA NCS1002 NCS1002 ORDERING INFORMATION Device NCS1002DR2G Package Shipping† SOIC−8 (Pb−Free) 2500 / Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. http://onsemi.com 8 NCS1002 PACKAGE DIMENSIONS SOIC−8 NB CASE 751−07 ISSUE AJ −X− NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. 751−01 THRU 751−06 ARE OBSOLETE. NEW STANDARD IS 751−07. A 8 5 S B 0.25 (0.010) M Y M 1 4 −Y− K G C N DIM A B C D G H J K M N S X 45 _ SEATING PLANE −Z− 0.10 (0.004) H D 0.25 (0.010) M Z Y S X M J S MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 1.35 1.75 0.33 0.51 1.27 BSC 0.10 0.25 0.19 0.25 0.40 1.27 0_ 8_ 0.25 0.50 5.80 6.20 INCHES MIN MAX 0.189 0.197 0.150 0.157 0.053 0.069 0.013 0.020 0.050 BSC 0.004 0.010 0.007 0.010 0.016 0.050 0 _ 8 _ 0.010 0.020 0.228 0.244 SOLDERING FOOTPRINT* 1.52 0.060 7.0 0.275 4.0 0.155 0.6 0.024 1.270 0.050 SCALE 6:1 mm Ǔ ǒinches *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: [email protected] N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5773−3850 http://onsemi.com 9 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCS1002/D